:root {
  --ink: #17231f;
  --muted: #5f6d67;
  --green: #0f5b46;
  --green-dark: #0a4033;
  --green-soft: #e8f1ed;
  --gold: #b69052;
  --line: #dce4df;
  --paper: #ffffff;
  --paper-alt: #f7f9f8;
  --max: 1180px;
  --shadow: 0 18px 50px rgba(23, 35, 31, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1.25rem; }
h1, h2, h3 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-weight: 500; line-height: 1.13; }

.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.section { padding: 100px 0; }
.section--tint { background: var(--paper-alt); }
.eyebrow { margin: 0 0 14px; color: var(--green); font-size: .76rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.section-title { max-width: 760px; font-size: clamp(2rem, 4vw, 3.35rem); letter-spacing: -.03em; }
.section-intro { max-width: 700px; margin-top: 22px; color: var(--muted); font-size: 1.08rem; }
.text-link { color: var(--green); font-size: .89rem; font-weight: 700; letter-spacing: .03em; }
.text-link::after { content: " →"; transition: margin .2s ease; }
.text-link:hover::after { margin-left: 4px; }

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid rgba(220, 228, 223, .9);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(14px);
}

.nav-wrap { display: flex; min-height: 78px; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark { display: grid; width: 39px; height: 39px; place-items: center; background: var(--green); color: #fff; font-family: Georgia, serif; font-size: 1.08rem; }
.brand-copy { display: grid; line-height: 1.15; }
.brand-copy strong { font-family: Georgia, serif; font-size: 1rem; font-weight: 600; }
.brand-copy span { margin-top: 4px; color: var(--muted); font-size: .67rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.site-nav { display: flex; align-items: center; gap: 25px; }
.site-nav a { position: relative; padding: 28px 0 25px; color: #3f4c47; font-size: .85rem; font-weight: 650; }
.site-nav a::after { position: absolute; right: 0; bottom: 20px; left: 0; height: 2px; background: var(--green); content: ""; transform: scaleX(0); transition: transform .2s ease; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--green); }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; }
.menu-toggle span, .menu-toggle::before, .menu-toggle::after { display: block; width: 20px; height: 2px; margin: 4px auto; background: currentColor; content: ""; transition: .2s ease; }
.menu-toggle[aria-expanded="true"] span { opacity: 0; }
.menu-toggle[aria-expanded="true"]::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"]::after { transform: translateY(-6px) rotate(-45deg); }

.hero { position: relative; min-height: 690px; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before { position: absolute; inset: 0; background: radial-gradient(circle at 82% 18%, rgba(15,91,70,.1), transparent 31%), linear-gradient(90deg, #fff 0%, #fff 58%, #f3f7f5 58%); content: ""; }
.hero-grid { position: relative; display: grid; min-height: 690px; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 70px; }
.hero h1 { max-width: 710px; font-size: clamp(3.2rem, 7vw, 6.3rem); letter-spacing: -.055em; }
.hero-subtitle { margin: 27px 0 16px; color: var(--green); font-size: clamp(1rem, 2vw, 1.25rem); font-weight: 650; letter-spacing: .015em; }
.hero-affiliation { max-width: 560px; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 11px 21px; border: 1px solid var(--green); background: var(--green); color: #fff; font-size: .86rem; font-weight: 700; letter-spacing: .02em; transition: .2s ease; }
.button:hover { background: var(--green-dark); transform: translateY(-1px); }
.button--ghost { background: transparent; color: var(--green); }
.button--ghost:hover { background: var(--green-soft); }
.hero-visual { position: relative; }
.hero-visual::before { position: absolute; z-index: -1; top: -30px; right: -30px; width: 64%; height: 70%; border: 1px solid rgba(182,144,82,.55); content: ""; }
.hero-visual img { width: 100%; min-height: 430px; object-fit: cover; box-shadow: var(--shadow); }
.replace-note { display: inline-block; margin-top: 12px; padding: 4px 9px; border: 1px dashed #91a098; color: var(--muted); background: rgba(255,255,255,.8); font-size: .7rem; letter-spacing: .04em; }

.stats { display: grid; padding: 27px 0; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.stat { padding: 13px 32px; border-right: 1px solid var(--line); }
.stat:first-child { padding-left: 0; }
.stat:last-child { border: 0; }
.stat strong { display: block; font-family: Georgia, serif; font-size: 1.25rem; font-weight: 500; }
.stat span { color: var(--muted); font-size: .82rem; }

.research-grid { display: grid; margin-top: 55px; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.research-card { min-height: 245px; padding: 30px; border: 1px solid var(--line); background: var(--paper); transition: .25s ease; }
.research-card:nth-child(1), .research-card:nth-child(2), .research-card:nth-child(3) { grid-column: span 2; }
.research-card:nth-child(4), .research-card:nth-child(5) { grid-column: span 3; }
.research-card:hover { border-color: #abc1b8; box-shadow: var(--shadow); transform: translateY(-4px); }
.card-number { display: block; margin-bottom: 45px; color: var(--gold); font-family: Georgia, serif; font-size: .88rem; }
.research-card h3 { margin-bottom: 14px; font-size: 1.45rem; }
.research-card p { margin: 0; color: var(--muted); font-size: .92rem; }

.feature-split { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 85px; }
.feature-image { position: relative; }
.feature-image img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.feature-image::after { position: absolute; right: -20px; bottom: -20px; width: 60%; height: 48%; border-right: 1px solid var(--gold); border-bottom: 1px solid var(--gold); content: ""; }
.feature-copy h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
.feature-copy p { margin-top: 25px; color: var(--muted); }
.principles { display: grid; margin-top: 34px; gap: 18px; }
.principle { display: grid; grid-template-columns: 36px 1fr; gap: 15px; }
.principle span { color: var(--green); font-family: Georgia, serif; }
.principle strong { display: block; margin-bottom: 3px; }
.principle p { margin: 0; font-size: .9rem; }

.news-list { margin-top: 52px; border-top: 1px solid var(--line); }
.news-item { display: grid; padding: 26px 0; grid-template-columns: 150px 1fr auto; align-items: center; gap: 30px; border-bottom: 1px solid var(--line); }
.news-item time { color: var(--muted); font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; }
.news-item h3 { font-family: Inter, sans-serif; font-size: 1rem; font-weight: 650; line-height: 1.5; }

.cta { padding: 78px 0; background: var(--green-dark); color: #fff; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 50px; }
.cta h2 { max-width: 680px; font-size: clamp(2rem, 4vw, 3.2rem); }
.cta p { max-width: 610px; margin: 18px 0 0; color: rgba(255,255,255,.72); }
.cta .button { flex: 0 0 auto; border-color: #fff; background: #fff; color: var(--green-dark); }

.page-hero { padding: 98px 0 74px; border-bottom: 1px solid var(--line); background: linear-gradient(120deg, #f6f9f7, #fff 66%); }
.page-hero h1 { max-width: 820px; font-size: clamp(2.8rem, 6vw, 5rem); letter-spacing: -.045em; }
.page-hero p:last-child { max-width: 700px; margin: 20px 0 0; color: var(--muted); font-size: 1.05rem; }
.content-grid { display: grid; grid-template-columns: 280px 1fr; gap: 80px; }
.side-label { position: sticky; top: 120px; align-self: start; color: var(--green); font-size: .76rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.prose h2 { margin: 0 0 18px; font-size: 2rem; }
.prose h3 { margin: 36px 0 12px; font-size: 1.35rem; }
.prose p { color: var(--muted); }
.prose + .prose { margin-top: 70px; padding-top: 70px; border-top: 1px solid var(--line); }

.person-grid { display: grid; margin-top: 45px; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.person-card { border: 1px solid var(--line); background: #fff; }
.person-card img { width: 100%; aspect-ratio: 4 / 4.4; object-fit: cover; background: var(--green-soft); }
.person-card__body { padding: 24px; }
.person-card h3 { font-size: 1.35rem; }
.person-role { margin: 5px 0 12px; color: var(--green); font-size: .83rem; font-weight: 700; }
.person-card p:last-child { margin: 0; color: var(--muted); font-size: .86rem; }
.person-card--pi { display: grid; grid-template-columns: minmax(280px,.8fr) 1.2fr; grid-column: 1 / -1; }
.person-card--pi img { height: 100%; aspect-ratio: auto; }
.person-card--pi .person-card__body { display: flex; padding: 45px; flex-direction: column; justify-content: center; }
.person-card--pi h3 { font-size: 2.2rem; }

.publication-list { margin-top: 42px; border-top: 1px solid var(--line); counter-reset: publication; }
.publication { display: grid; padding: 30px 0; grid-template-columns: 70px 1fr; gap: 22px; border-bottom: 1px solid var(--line); counter-increment: publication; }
.publication::before { color: var(--gold); font-family: Georgia, serif; content: counter(publication, decimal-leading-zero); }
.publication h3 { margin-bottom: 8px; font-family: Inter, sans-serif; font-size: 1rem; font-weight: 650; line-height: 1.55; }
.publication p { margin: 0; color: var(--muted); font-size: .87rem; }
.publication .journal { margin-top: 5px; color: var(--green); font-style: italic; }
.tag { display: inline-block; margin: 0 7px 7px 0; padding: 4px 10px; background: var(--green-soft); color: var(--green); font-size: .72rem; font-weight: 700; }

.timeline { margin-top: 44px; }
.timeline-item { position: relative; display: grid; padding: 0 0 48px 55px; grid-template-columns: 120px 1fr; gap: 35px; }
.timeline-item::before { position: absolute; top: 7px; bottom: 0; left: 12px; width: 1px; background: var(--line); content: ""; }
.timeline-item::after { position: absolute; top: 7px; left: 7px; width: 11px; height: 11px; border-radius: 50%; background: var(--green); content: ""; }
.timeline-item time { color: var(--muted); font-size: .8rem; font-weight: 700; }
.timeline-item h2 { margin-bottom: 10px; font-size: 1.55rem; }
.timeline-item p { color: var(--muted); }

.opportunities { display: grid; margin-top: 45px; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.opportunity { padding: 29px; border-top: 3px solid var(--green); background: var(--paper-alt); }
.opportunity h3 { margin-bottom: 12px; font-size: 1.35rem; }
.opportunity p { color: var(--muted); font-size: .9rem; }
.checklist { padding: 0; list-style: none; }
.checklist li { position: relative; padding: 10px 0 10px 28px; border-bottom: 1px solid var(--line); color: var(--muted); }
.checklist li::before { position: absolute; left: 0; color: var(--green); content: "✓"; font-weight: 700; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.contact-card { padding: 40px; border: 1px solid var(--line); }
.contact-card h2 { margin-bottom: 22px; font-size: 1.8rem; }
.contact-row { padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-row:last-child { border: 0; }
.contact-row span { display: block; margin-bottom: 3px; color: var(--muted); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.contact-row strong { font-weight: 600; }
.map-placeholder { display: grid; min-height: 370px; padding: 35px; place-items: center; background: var(--green-soft); text-align: center; }
.map-placeholder strong { display: block; margin-bottom: 7px; font-family: Georgia, serif; font-size: 1.5rem; }

.site-footer { padding: 55px 0 28px; border-top: 1px solid var(--line); background: #101a17; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .75fr .75fr; gap: 60px; }
.footer-brand { max-width: 420px; }
.footer-brand h2 { font-size: 1.55rem; }
.footer-brand p { margin-top: 16px; color: rgba(255,255,255,.61); font-size: .87rem; }
.footer-col strong { display: block; margin-bottom: 13px; font-size: .72rem; letter-spacing: .13em; text-transform: uppercase; }
.footer-col a { display: block; margin: 7px 0; color: rgba(255,255,255,.65); font-size: .85rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; margin-top: 42px; padding-top: 22px; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.47); font-size: .72rem; }

.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; background: var(--green-dark); color: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 79px; right: 0; left: 0; display: none; padding: 18px 20px 28px; align-items: stretch; flex-direction: column; gap: 0; border-bottom: 1px solid var(--line); background: #fff; }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 11px 0; }
  .site-nav a::after { bottom: 7px; right: auto; width: 28px; }
  .hero-grid { grid-template-columns: 1fr; gap: 50px; padding: 80px 0; }
  .hero-visual { width: min(100%, 640px); }
  .feature-split, .content-grid { grid-template-columns: 1fr; gap: 55px; }
  .side-label { position: static; }
  .person-grid, .opportunities { grid-template-columns: repeat(2, 1fr); }
  .person-card--pi { grid-template-columns: 1fr 1.2fr; }
}

@media (max-width: 720px) {
  .container { width: min(calc(100% - 30px), var(--max)); }
  .section { padding: 72px 0; }
  .brand-copy span { display: none; }
  .hero, .hero-grid { min-height: auto; }
  .hero::before { background: linear-gradient(#fff, #f5f8f6); }
  .hero-grid { padding: 68px 0; }
  .hero h1 { font-size: clamp(3rem, 16vw, 4.4rem); }
  .hero-visual img { min-height: 290px; }
  .stats { grid-template-columns: 1fr; }
  .stat, .stat:first-child { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .research-grid { grid-template-columns: 1fr; }
  .research-card:nth-child(n) { grid-column: 1; }
  .research-card { min-height: 0; }
  .card-number { margin-bottom: 26px; }
  .feature-split { gap: 45px; }
  .feature-image { max-width: 92%; }
  .news-item { grid-template-columns: 1fr; gap: 7px; }
  .news-item .text-link { margin-top: 5px; }
  .cta-inner { align-items: flex-start; flex-direction: column; }
  .page-hero { padding: 70px 0 55px; }
  .person-grid, .opportunities, .contact-grid { grid-template-columns: 1fr; }
  .person-card--pi { display: block; }
  .person-card--pi img { aspect-ratio: 4 / 4.3; }
  .person-card--pi .person-card__body { padding: 28px; }
  .timeline-item { padding-left: 38px; grid-template-columns: 1fr; gap: 5px; }
  .timeline-item::before { left: 7px; }
  .timeline-item::after { left: 2px; }
  .publication { grid-template-columns: 42px 1fr; }
  .contact-card { padding: 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}